The California Department of Finance (DOF) has issued population projections for the state’s counties to 2060. Forecasts are provided for every decade, from a 2010 base. The DOF projects that the the state will grow from 37.3 million residents in 2010 to 51.7 million in 2060.

The just released County Business Patterns indicates a general trend of continued employment dispersion to the newer suburbs (principally the outer suburbs) and exurbs but also greater concentration in the central business districts of the 52 major metropolitan areas in the United States (over 1 million population in 2013). County Business Patterns is a Census Bureau program that provides largely private-sector employment data by geography throughout the nation.

Americans continue to favor large houses on large lots. The vast majority of new occupied housing in the major metropolitan areas of the United States was detached between 2000 and 2010 and was located in geographical sectors associated with larger lot sizes. Moreover, houses became bigger, as the median number of rooms increased (both detached and multi-family), and the median new detached house size increased.

Senior citizens (age 65 and over) are dispersing throughout major metropolitan areas, and specifically away from the urban cores. This is the opposite of the trend suggested by some planners and media sources who claim than seniors are moving to the urban cores.

There is a general perception that the densest US cities are in the Northeast, where downtowns tend to be bigger and inner city densities are higher. However, cities have become much larger geographically, and also include the automobile oriented lower density suburbs that have developed since World War II. In fact, most of the densest major urban areas are in the West.

Cities have been pivotal role to improved living standards, because of the opportunities they facilitate. This is particularly evident over the past two centuries, as world urbanization has risen from 3 percent to over 50 percent, and to more than 80 percent in the United States.

Many American cities, described commonly as urban cores, are functionally more suburban and exurban, based on urban form, density, and travel behavior characteristics. Data from the 2010 census shows that 42.3 percent of the population of the historical core municipalities was functionally urban core (Figure 1). By comparison, 56.3 of the population lived in functional suburbs and another 1.3 percent in functionally exurban areas (generally outside the urban areas). Urban cores are defined as areas that have high population densities (7,500 or per square mile or 2,900 per square kilometer or more) and high transit, walking and cycling work trip market shares (20 percent or more). Urban cores also include non-exurban sectors with median house construction dates of 1945 or before. All of these areas are defined at the zip code tabulation area (ZCTA) level, rather than by municipal jurisdiction. This is described in further detail in the “City Sector Model” note below.

Philadelphia was America’s first large city and served as the nation’s capital for all but nine months between the inauguration of George Washington is the first president in 1789 and the capital transferred to Washington, DC in 1800. Before the early 1900s, the United States Census Bureau had not developed a metropolitan area (labor market area) concept. However, the website peakbagger.com has attempted to define earlier metropolitan areas based on concepts similar to those used today. In the case of Philadelphia, this is important, because it was somewhat unique in having virtually adjacent, highly populated suburbs that make comparisons of municipal populations (the only population data available) misleading.

Time Magazine’s Sam Frizell imagines that the American Dream has changed, in an article entitled “The New American Dream is Living in a City, Not Owning a House in the Suburbs.” Frizell further imagines that “Americans are abandoning their white-picket fences, two-car garages, and neighborhood cookouts in favor of a penthouse view downtown and shorter walk to work.” The available population data shows no such trend.